Name:C.I.Direct Brown 179,C.I.21575
Molecular Structure: Double azo class
Molecular Weight: 602.42
CAS Registry Number:1325-25-3
Properties and Applications: dark red light brown. Soluble in water for yellow to orange brown, soluble in ethanol. The strong sulfuric acid for blue, light olive gray diluted. The dye solution to join strong hydrochloric acid have blue-ray gray precipitation; Add thick sodium hydroxide solution for purple.
List of Suppliers:
Ergan Soga Merah Toeah 4RG( IG Farbenindustrie AG )